Donald Trump blasts Jerry Seinfeld

Donald Trump has slammed Jerry Seinfeld after the comedian pulled out of a benefit for the Eric Trump Foundation.

According to Seinfeld's rep, the former sitcom star decided not to take part in the benefit event because he "has grown increasingly uncomfortable" with Trump's questioning of President Obama's citizenship, reports Gossip Cop.

The rep said that Seinfeld "feels this kind of demagoguery has no place in public discourse".

Instead of appearing at the event, Seinfeld decided to make a financial contribution to the Trump Foundation and St Jude's Children's Research Hospital.

Trump then wrote a fiery letter to Seinfeld expressing his disappointment.

"We don't care that you broke your commitment, even though the children of St Jude are very disappointed, and despite the fact that your manager clearly stated you are 'truly a man of his word'," Trump wrote.

The Celebrity Apprentice star added: "What I do feel badly about is that I agreed to do, and did, your failed show, The Marriage Ref, even though I thought it was absolutely terrible… Despite its poor ratings, I didn't cancel on you like you canceled on my son and St Jude. I only wish I did."